/*
 * Copyright 2021-2022 Alibaba Group Holding Ltd.
 *
 *    Licensed under the Apache License, Version 2.0 (the "License");
 *    you may not use this file except in compliance with the License.
 *    You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *    Unless required by applicable law or agreed to in writing, software
 *    distributed under the License is distributed on an "AS IS" BASIS,
 *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *    See the License for the specific language governing permissions and
 *    limitations under the License.
 */

package com.aliyun.fastmodel.driver.cli.terminal;

import java.util.Locale;
import java.util.Set;
import java.util.stream.Collectors;

import com.google.common.collect.ImmutableSet;
import org.jline.reader.Completer;
import org.jline.reader.impl.completer.StringsCompleter;

/**
 * Desc:
 *
 * @author panguanjing
 * @date 2021/1/26
 */
public class Completion {

    private static final Set<String> COMMANDS = ImmutableSet.of(
        "SELECT",
        "SHOW UNITS",
        "SHOW BUSINESSPROCESSES",
        "SHOW TABLES",
        "SHOW ATOMIC INDICATORS",
        "SHOW ATOMIC COMPOSITE INDICATORS",
        "SHOW LAYERS",
        "SHOW DOMAINS",
        "SHOW ADJUNCTS",
        "SHOW TIMEPERIODS",
        "CREATE DIM TABLE",
        "CREATE FACT TABLE",
        "CREATE DWS TABLE",
        "CREATE ADS TABLE",
        "HELP",
        "QUIT",
        "DESCRIBE"
    );

    private Completion() {

    }

    public static Completer commandCompleter() {
        return new StringsCompleter(ImmutableSet.<String>builder().addAll(
            COMMANDS
        ).addAll(COMMANDS.stream().map(value -> value.toLowerCase(Locale.ENGLISH)).collect(Collectors.toSet()))
            .build());
    }
}
